Citation
Abdullah, Luqman Chuah and Mirjalili, Fatemeh and Mohamad, Hasmaliza
(2011)
Preparation of Nano-Scale a-Al2O3 Powder by the Sol-Gel Method.
Ceramics-Silikáty, 55 (4).
pp. 378-383.
ISSN 0862-5468
Abstract
Sol-gel method was applied to synthesize ultrafine nano α-alumina particles using aqueous solutions of aluminum isopropoxide
and 0.5 M aluminum nitrate hydrate. Sodium dodecylbenzen suffocate and Sodium bis-2ethylhexyl sulfosuccinate were also
used as surfactant stabilizing agents. The prepared solution was stirred for 48 hours at 60°C, then, the resultant gelled
mass was dried at 90°C, and finally, calcined at 1200°C for about 1 hour. The samples were characterized by different
techniques such as, Brunauer-Emmet-Teller method, X-ray diffraction, Thermogravimetry analysis, Differential Scanning
Calorimetry, Fourier transform infrared spectra, Scanning electron microscopy and Transmission electron microscopy. The
results indicated that the addition of sodium dodecylbenzen sufonates and sodium bis-2ethylhexyl sulfosuccinate not only
affected the particle size and shape of the produced nanoparticles but also the degree of aggregation. However, sodium
dodecylbenzen sufonate produced better dispersion and finer particles, in range of 20-30 nm, compared to Sodium bis-
2ethylhexyl sulfosuccinate.
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